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What is the difference between Napa Gold and ProSelect air filters? https://www.napaonline.com/en/p/FIL6914 https://www.napaonline.com/en/p/SFI26914 The both appear to use the same manufacturer part number (Wix 46914), but there's ~$6 difference. Maybe there's a Napa typo? Maybe a scam...

Does anyone have a comparison between Baldwin High Velocity Dual Flow vs. Fleetguard Venturi Combo? The design of the Baldwin bypass appears to be a synthetic fiber media, while Fleetguard appears to be a metal stacked media disc. But I don't know, and I can't tell if the bypass media is metal...

How easily could a hose come off the Fumoto oil drain valve? The N-Type looks like a hose could slip off, especially as the hose stretches or gets hot. The S-Type looks like it can easily "unsnap". The above situations would be a very clean oil change. Are there better alternatives for fast...

Has anyone done an oil drain plug comparison between plugs with magnet versus without a magnet using oil analysis? I'm trying to determine if it is worth having a magnetic oil plug or if the oil filter will be adequate. The application would be in gas and diesel engines. Thanks

What are people's thoughts of using an electric diaphragm pump to extract oil versus vacuum? Pneumatic interest me too. The idea is to have maximum and constant vacuum pressure, especially when the oil is cold. Also a pneumatic wouldn't have a pump to worry about. MityVac vs. Pela 650 SHURflo...

Should I change the oil annually on a vehicle that isn't driven much? Why? Does oil and/or the additives deteriorate?

What is a part number for an oversize oil filter for the Subaru Outback 2.5 Fourth Generation (2005)? Thanks.

Is there a compiled list of oil filter that are compared by filtration, capacity, oil flow? Thanks in advance. Jake.

I drive my diesel truck less than the oil change interval, and don't drive my motorcycle more than than the oil change interval either. I've heard the anti-oxidants do not last longer than one year, regardless of oil mileage. Do I still need to change the oil after one year? Is oil time...

In regards to short trips (i.e. less than 10 miles): Is synthetic oil more efficient absorbing contaminants at lower oil temperature. According to this article and Robert Sutherland, a Pennzoil scientist who works at Shell Global Solutions, cold oil (less than 10 miles) is less efficient at...

I've been looking at pressure washers and notice the units have engine options for Subaru EX-17, Honda GC, and Honda GX 200. What are the differences and pros/cons? I'm a prosumer: to me this means high quality and reliability, but won't be running continuously and putting a lot of hours on the...

I've read a lot of threads discussing the anti-wear additives, mainly moly and ZDDP lately. In general, there's an assumption that more is better, or an oil without the additives is inferior. When it comes to general oil use (not racing), I'd like to hear more about why oil manufacturers are...

It has been said that most engine wear occurs during startup/warmup. I have a truck I drive infrequently (driven one day per week). I'm wondering if the oil is dripping off the engine parts with a 0w or 5w oil enough to cause extra wear, and perhaps a 15w would hold on longer? I've read...

Does anyone have information or a list regarding the group base stock of the different engine oils? Thanks, Jake

Anyone know if adding molybdenum disulfide (MoS2) to diesel oil for a diesel engine with HEUI injectors might cause a problem? I'm concerned about adding solids to oil that may damage something. Thinking of adding this (at the recommended dosage): Moly4Oil. Thanks, Jake

Does anyone have a VOA for Valvoline Premium Blue and Valvoline Premium Blue Extreme? Thanks, Jake

I understand the 10w, meaning the winter viscosity. But what is the difference between 30 and 40? The 10w makes sense...lower rating means oil flows thinner at low temperatures. Therefore better lubrication at startup when it's freezing. 30 vs. 40? 40 weight is thicker (not sure how much...

Anyone have some good tests/info that shows pros/cons of each type of bypass/dual flow oil filter by Donaldson, Fleetguard, and Baldwin? http://www.fleetguard.com/pdfs/product_lit/americas_brochures/LT15094.pdf...